Transformations
Transformations in Computer Aided Design (CAD) involve the matrix representation of points, lines, and planes, as well as various geometric transformations in both 2D and 3D. These transformations include translation, scaling, rotation, and reflection, all of which are crucial for precise geometric modeling and simulation. Understanding the mathematics behind these transformations allows for effective design, analysis, and visualization in engineering applications.
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What we have learnt
- A point in 2D is represented as a column vector.
- 2D transformations are represented using 3x3 matrices and include translation, scaling, rotation, and reflection.
- 3D transformations utilize 4x4 matrices and include similar operations along with the concatenation of these transformations.
Key Concepts
- -- Matrix Representation
- Using matrices to represent geometric entities like points, lines, and planes in different dimensions.
- -- Homogeneous Coordinates
- Incorporating an extra dimension to simplify the representation and manipulation of geometric transformations.
- -- Transformation Matrices
- Matrices that facilitate transformations (translation, scaling, rotation, and reflection) in geometric modeling.
- -- Concatenation of Transformations
- The process of combining multiple transformations by multiplying their corresponding matrices in a specific order.
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